|
resourcesRESOURCESFORMULAS
What is the formula for converting cutting speed Vc to rotational speed RPM?
RPM = Vc x 3.82 / DIA
What is the formula for converting RPM rotation speed to Vc cutting speed?
Vc = RPM x 0.262 x DIA
What is the formula for calculating the advance per minute Vf?
Vf = RPM x fn (piece in rotation) Vf = RPM x fz x Zn (tool in rotation)
What is the formula for calculating chip flow Q to inches3/min?
Q = Vc x ap x fn x 12 (piece in rotation) Q = ae x ap x Vf (tool in rotation)
What is the formula for calculating the effective cutting diameter Dθ on a ball end mill?
Dθ = 2 x √ (ae x (DIA – ae))
What is the role of lubricant in machining?
Lubricant has multiple roles, the main one is cooling the cutting area, but it also serves to clear the chips of the cutting tool and improves the surface condition of the workpiece.
While milling, is it better to operate dry or under water?
Since milling is by nature intermittent, to prolong the life of the edges it is preferable to machine dry except for the finishing of stainless steels and aluminum (to prevent sticking of particles on the surface of the workpiece), for milling low-speed refractory superalloys (to lubricate and cool the workpiece), for milling thin-walled parts (to prevent deformation of the workpiece) or to facilitate chip evacuation when machining deep cavities.
RPM : Spindle speed
Vc : Cutting speed DIA : Diameter Q : Chip flow Dθ : Effective cutting diameter Vf : Feed per minute fn : Feed in inches per revolution fz : Feed. Zn : Number of teeth ap : Depth of cut ae : Engagement en pouce. GLOSSARY
Cutting fluid
Cutting fluit is a type of coolant and lubricant designed specifically for metalworking processes, such as machining and stamping.
Concentricity
Clearance
Chip breaker
Cutting speed Cutting speed represents the distance traveled in feet per minute or meters per minute of the workpiece relative to the tool tooth (when the piece is rotating) or a corresponding cutting tool tooth with the workpiece (when the tool is rotating).
Spindle speed
Expressed as the number of revolutions per minute, it is a measure of the spindle speed.
USEFUL LINKS
|
|